William m



(ModeL) M. BROO P TATION PA K.

No. 426,233. Patented Apr. 22, 1890.

UNITED STATES PATENT OFFICE.

WILLIAM M. BROOKE, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF AND JAMES J. EBERT, OF SAME PLACE.

PERM UTATlON-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 426,233, dated April 22, 1890- Application filedPehruary 14, 1889. $e1ial No. 299,816. (Modem- To all whom it may concern:

Be it known that I, \VILLIAM M. BROOKE, of the city, county, and State of New York, have invented a new and Improved Permutation-Padlock, of which the following is a full, clear, and exact description.

This invention relates to combination-padlocks, and has for its object to provide a combination-padlock consisting of a number of flanged rings having registering notches in the flanges and letters, figures, or symbols on their periphery and arranged to rotate about a vertical support, and a shackle with double arms, one of which has locking-teeth, and is adapted to be projected through the notches of the rings when they are made to register by the formation of the combination and to be engaged with the flanges of the rings to lock the shackle upon upsetting the combination.

This invention also has for its object to provide a combination padlock of the character above referred to, which is so constructed that the shackles may be engaged and locked in the padlock without adjusting the rings to form the combination, the means whereby this is eiiected not being apparent to the ordinary observer.

The invention consists in a permutationpadlock and in details thereof, constructed and arranged as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, inwhich similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a view of the invention in elevation. Fig. 2 is a vertical section 011 the line a: at, Fig. 1. Fig. 3 is a vertical section on the line y 1}, Fig. 2, with shackle removed. Fig. 4c is a plan view of the padlock with shackle removed, and Fig. 5 is a perspective View of the rotary rings detached. Fig. 6 is a perspective View of a modified form of ring.

In the construction of this invention a number of metallic rings 1 are provided having suitable letters, symbols, or figures arranged 011 their periphery, such as the figures shown. The rings 1 are formed with internal horizontal flanges 2 their top, forming a circular openingS, and having notches 4 adapted to register with each other.

A support for the rings 1 consists of a circular metallic base 5, equal in diameter to the rings, and a central vertical projection or post 6, which, as well as the base 5, may be made solid or hollow. As here shown, the vertical projection is made solid with a central vertical slot or passage '7 extending from top to bottom and across the post or vertical proj ection. The central vertical projection or post (3 forms with the base 5 a ledge or shoulder 8 equal in width to the flange of the rings 1.

The rings 1 are slid over the central projection 6, the circular openings 3 fitting to turn about the projection 6, and supported upon one another in a vertical column, with the lowest ring resting 011 the ledge or shoulder 8 of the base. The rings 1 are held in place by a cap 9 screwing onto the top of the vertical projection 6, and having slots 10 and 11, which extend in alignment with the slot or passage 7 in the vertical projection 6. The periphery of cap 9 is provided with symbols or figures similarly to the rings 1, and the cap may be secured to projection Gin any other suitable manner than by screwing onto the same. The periphery of base 5 may also be provided with symbols or figures, if desired.

12 indicates the shackle for the padlock formed with a plain arm 13 and an arm 14, having teeth 15.

The slots 10 and 11 are of such length that the teeth 15 are permitted to bepasscd through the slot 10, and the upper portion of the arms 13 and 14 may be vibrated or rocked in the slots 10 and 11.

The notches 4: in flanges 2 of rings 1 will be located in such relative position to the slot 10 in cap 9, when they register with each other, that they will be in alignment with the slot 10. The arms 13 and 1a inaythen be pushed through the slots 10 and 11 and into the slot or passage 7, the teeth 15 passing through the aligning slots a and bringing each tooth below an adjacent flange of the rings. Upon turning the rings 1 and upsetting the combination the teeth 15 will become locked with the flanges 2.

In order that the shackle may be locked in the padlock, when the slots 4; are not in alignment ,without forming the combination, the shackle 12'is formed with vertical sockets or recesses 16 adjacent to the inner ends of the arms 13 and 14:, in which are located slotted bolts 17,,mounted on cross-pins 18, and held outwardly by coiled springs 19. The outer ends of the bolts 17 are formed with a bevel 20. \Vithin the slots 7 is mounted a bent vertical spring-strip 21, secured at its lower end in the bottom of the slot 7, and having its bent or curved portion located in line with the slot 10.

By means of the foregoing construction, it the rings 1 are so arranged that the notches 4 do not happen to register and itis desired to lock the padlock, the arms 13 and 14 maybe pushed through the slots 10 and 11, the teeth 15 slipping past the flanges 2- of the rings, and the arm 13 pushing back the spring 21 until the ends of the bolts 17 strike against the edge of one end of the slots 10 and 11, when in the further advance of the arms 13 and 14, the bolts 17 will be pushed up into the sockets 16, the beveled ends 20 riding over the edge of one end of slots 10 and 11 until the teeth 15 are brought below the flanges 2 of rings 1, when the arms 13 and 14 will be moved laterally by the action of spring 21 throwing the teeth 15 into engagement with flanges 2, and permitting the bolts 17 to be projected into the slots 10 and 11 by the action of springs 19, thereby firmly locking the padlock.

In order to deceive the sense of touch 01": a person unacquainted with the combination and moving the rings on the teeth of the shackle to release the latter, the flanges 2 are formed on their surfaces with grooves or recesses 22, as shown in Fig. 5. By this means, when the shackle 12 is looked, upon the rings being turned by a person unacquainted with the combination, to find by the sense of touch the notches 4, the teeth 15, rubbing on the under side of the flanges 2, will be felt to move into a recess 22 on the under side of a flange 2, deceiving the person moving the rings in the belief that a tooth 15 is brought opposite a notch 4:, and so on in succession with all the recesses 22. It will be understood, of course, that only the recesses 22 on the under side of flanges 2 are brought into play. The recesses 22 on the upper side of the flanges 2 are only employed when the rings 1 are placed upside down on the post'6, as they may be, if desired.

In lieu of the recesses 22, another form of recess may be employed, as shown in Fig. 6, where a fluted surface 23 is formed in the surfaces of flange 2, the inner ends of the flutes 23 serving as deceiving recesses, similarly to recesses 22. In both instances the recesses may be formed only on one surface of the flanges 2. In order also to prevent the possibility of the combination being calculated by a person unacquainted therewith, one or more of the notches 4 is located intermediately between two figu res or symbols on the periphery of a ring. 7

Having thus ,fully described my invention, I claim as new and desire to secure by Letters Patent- I 1. A permutation-padlock constructed with a circular base having a central vertical recessed projection or post containing a vertically-vibrating spring-arm, a number of rotary rings with internal horizontal flanges mounted in a vertical column on the vertical post and base and having registering notches in their flanges and symbols or figures on their periphery, a cap for retaining the rings on the post having slots aligning with the recess of the post, and a shackle having double arms, one of which is formed with lookingteeth to engage the flanges of the ringsand is acted upon laterally by the spring in the vertical post, and spring-actuated vertical bolts with beveled ends projecting into the slots in the cap between the arms of the shackle and the ends of the slots, substantially as shown and described.

2. The combination,.in a permutation-padlock, with the base having a projection provided with a vertical recess, a cap-plate having a registering recess, and notched rings mounted on the projection between said cap and base, of a shackle provided witha toothed arm adapted to be passed through said slot into the recess and laterally into engagement with said rings, and a lock for retaining the arm against reverse lateral movement away from the rings, substantially as set forth.

3. In a permutation padlock, a circular base and central recessed post, a number of rotary rings with internal horizontal flanges having registering notches and mounted. in a vertical column on the post and base, a cap secured to the top of the post with slots opening into the recessed post, and a shackle having two arms which project through the slots in the cap and into the recessed post, one of the arms being locking-teeth adapted to pass through the registering notches in the rings and engage their flanges, and vertical springactuated bolts in the shackle which project into the slots of the cap adjacent to the arms, substantially as shown and described.

4:. A permutation-padlockconstructed with a circular base 5, having a central vertical post 6, with recess 7, extending across and from top to bottom thereof and a vertical springstrip 21 located therein, a vertical column of rotary rings 1, with horizontal internal flanges 2, having registering notches 4, mounted on the base 5, and post 6, a cap 9, secured to the top of post 6, and having oblong slots 10 and 11 opening into recess 7 in post 6, and a shackle 12, with a plain arm 13, and an arm 1-1, with teeth 15, adapted to pass through the registering notches 4 in rings 1 and engage their flanges 2, the arms 13 and let projecting through slots 10 and 11 in cap 9, and the recess 7 in post 6, with the spring 21 bearing against arm 14, and spring-actuated bolts 17,

IIO

with beveled ends 26, projecting from shackle 12 through slots 10 and 11, and parallel with arms 13 and 14, substantially as shown and described.

5. The combination, with a base provided with a vertically-recessed projection, a cap having a slot over the upper end of the recess, and notched rings on the projection between the base and cap, of the shackle having a toothed arm of less Width than the length of the said slot and width of the said recess, a bolt on the shackle to fill the space between the inner edge of its arm and the inner end of the slot, and a spring for pressing the shackle-arm laterally as it enters the recess, substantially as set forth.

6. In a permutation -1ock, as herein described, a shackle 12, formed With the plain arm 13 the arm 14, with locking-teeth 15, and the vertical recesses 16 at the inner end of arms 13 and 14, with spring-actuated bolts 17, having beveled ends 20, the bolts 17 being movable lengthwise upon the arms 13 and 14, substantially as shown and described.

XVILLIAM M. BROOKE. lVitnesses:

JAS. J. EBERT, EDGAR TATE. 

